1. The principal business code for Instacart is 492000.
2. You should use your given name and home address for your Instacart work.
3. Yes, you will have multiple Schedule C's...one for your jewelry business and one for your Instacart work.
For more information, please check out these TurboTax Help Articles:
Where do I enter Schedule C?
What self-employed expenses can I deduct?
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